CN114895491B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114895491B CN114895491B CN202210645940.0A CN202210645940A CN114895491B CN 114895491 B CN114895491 B CN 114895491B CN 202210645940 A CN202210645940 A CN 202210645940A CN 114895491 B CN114895491 B CN 114895491B
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- 238000010438 heat treatment Methods 0.000 claims abstract description 284
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 72
- 239000000758 substrate Substances 0.000 claims description 47
- 239000002346 layers by function Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 23
- 238000010586 diagram Methods 0.000 description 13
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133334—Electromagnetic shields
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/87—Arrangements for heating or cooling
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a display device. The display panel comprises a display panel, a first heating circuit and a second heating circuit, wherein the first heating circuit and the second heating circuit are mutually laminated and mutually insulated in the light emitting direction of the display panel; the first heating circuit and the second heating circuit are positioned in the display panel or adjacent to the display panel, and the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel is at least partially overlapped with the display panel; the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel are overlapped, and the electromagnetic fields of the first heating circuit and the second heating circuit are opposite. Through the scheme, the electromagnetic fields generated by the first heating circuit and the second heating circuit are close to each other and have opposite directions, so that the electromagnetic fields generated by the first heating circuit and the second heating circuit can offset each other, interference of the electromagnetic fields of the heating circuits on other signals in the display panel is avoided, and the working stability of the display panel is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the expansion of the application field of display devices, new requirements are put on the performance of the display devices. For example, military or vehicular displays require a long period of operation in a cryogenic environment, but cryogenic temperatures can have a significant impact on the response time of the display device. Therefore, in order to ensure the normal application of the display device in the special fields of military use or vehicle-mounted display and the like, measures are required to widen the low-temperature working range of the display device and ensure the working performance of the display device in a low-temperature environment.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for improving the display effect and the display performance of the display panel and the display device at low temperature.
In a first aspect, an embodiment of the present invention provides a display panel, including a display panel, a first heating circuit, and a second heating circuit, where the first heating circuit and the second heating circuit are stacked on each other and insulated from each other in a light emitting direction of the display panel;
the first heating circuit and the second heating circuit are positioned in the display panel or adjacent to the display panel, and the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel is at least partially overlapped with the display panel;
the vertical projection of the first heating circuit and the second heating circuit on the plane where the display panel is located are overlapped with each other, and the electromagnetic fields of the first heating circuit and the second heating circuit are opposite in phase.
In a second aspect, an embodiment of the present invention further provides a display apparatus, including a display panel according to the first aspect of the present invention.
In the invention, the display panel comprises a display panel, a first heating circuit and a second heating circuit, wherein the first heating circuit and the second heating circuit are mutually laminated and mutually insulated in the light emitting direction of the display panel; the first heating circuit and the second heating circuit are positioned in the display panel or adjacent to the display panel, and the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel is at least partially overlapped with the display panel; the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel are overlapped, and the electromagnetic fields of the first heating circuit and the second heating circuit are opposite. Through the technical scheme, when the first heating circuit and the second heating circuit transmit heating signals, the first electromagnetic field generated by the first heating circuit and the second electromagnetic field generated by the second heating circuit are close to each other, the magnetic field directions of the first electromagnetic field and the second electromagnetic field are opposite, and then the first electromagnetic field and the second electromagnetic field can cancel each other, so that the interference of the first electromagnetic field and the second electromagnetic field on other signals in the display panel is avoided, and the working stability of the display panel is improved.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along the direction A-A';
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of FIG. 3 along the direction B-B';
FIG. 5 is a timing chart of a driving signal according to an embodiment of the present invention;
FIG. 6 is a timing chart of another driving signal according to an embodiment of the present invention;
fig. 7 to fig. 9 are schematic cross-sectional structures of three display panels according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of FIG. 10 along the direction C-C';
FIG. 12 is a timing diagram of a driving signal according to another embodiment of the present invention;
fig. 13 is an enlarged schematic view of the structure of fig. 10 at D;
fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 15 is an enlarged schematic view of FIG. 14 at E;
fig. 16 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 17 is a schematic diagram of a display panel according to another embodiment of the present invention;
fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In order to meet the low-temperature influence time requirement of the display device, the existing display device is usually additionally provided with a heating circuit in the display panel, wherein the heating circuit is mainly used for heating the display panel in a low-temperature environment, so that the display device can achieve a higher response speed under the ultralow-temperature condition.
Fig. 1 is a schematic structural view of a display panel in the prior art, fig. 2 is a schematic structural view of a cross section of fig. 1 along A-A ', and a principle of heating the display panel by the heating circuit 1' can be briefly described as follows in conjunction with fig. 1 and fig. 2: a loop is formed between the heating circuit 1' and the driving chip (not shown in the figure), so that a certain current is formed in the heating circuit trace 10', and an arrow on the heating circuit trace 10' shown in fig. 1 represents a current transmission direction, and the current forms thermal power consumption through a heating circuit trace resistor, so that a heating effect is generated. However, the inventor researches that the added heating circuit 1 'is not completely a positive aid, when the heating circuit 1' is powered on to generate heat, the driving signal passes through the heating circuit wiring 10 'and simultaneously radiates the relevant electromagnetic field outwards, and the electromagnetic field 3' radiated outwards by the heating circuit 1 'can cause electromagnetic interference to signals in other driving circuits 42' in the display panel, so that the working stability of the display device is affected. In addition, for the liquid crystal display panel, the electromagnetic field 3' radiated from the heating circuit 1' will also affect the inversion of the liquid crystal 0 '; in addition, the heating circuit 1' is not arranged on the whole surface, the wiring directions of the heating circuits are different, the directions of the radiated electromagnetic fields 3' are also different, and the influence on the overturning of the liquid crystal 0' is also unbalanced, so that the problem of uneven display of the display panel is also caused.
In view of the above drawbacks of the prior art, the present invention provides a display panel including a display panel, a first heating circuit, and a second heating circuit, the first heating circuit and the second heating circuit being stacked on each other and insulated from each other in a light emitting direction of the display panel;
the first heating circuit and the second heating circuit are positioned in the display panel or adjacent to the display panel, and the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel is at least partially overlapped with the display panel;
the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel are overlapped, and the electromagnetic fields of the first heating circuit and the second heating circuit are opposite.
Through the technical scheme, when the first heating circuit and the second heating circuit transmit heating signals, the first electromagnetic field generated by the first heating circuit and the second electromagnetic field generated by the second heating circuit are close to each other, the magnetic field directions of the first electromagnetic field and the second electromagnetic field are opposite, and then the first electromagnetic field and the second electromagnetic field can cancel each other, so that the interference of the first electromagnetic field and the second electromagnetic field on other signals in the display panel is avoided, and the working stability of the display panel is improved.
The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any inventive effort are intended to fall within the scope of the present invention.
Fig. 3 is a schematic structural view of a display panel according to an embodiment of the present invention, and fig. 4 is a schematic structural view of a cross section of fig. 3 along a direction B-B', wherein, as shown in fig. 3 and fig. 4, the display panel according to the present invention includes a display panel 100, a first heating circuit 1 and a second heating circuit 2, and the first heating circuit 1 and the second heating circuit 2 are stacked on each other and insulated from each other in a light emitting direction of the display panel 100; the first heating circuit 1 and the second heating circuit 2 are located inside the display panel 100 or adjacent to the display panel 100, and vertical projections of the first heating circuit 1 and the second heating circuit 2 on a plane where the display panel 100 is located at least partially overlap with the display panel 100; the vertical projections of the first heating circuit 1 and the second heating circuit 2 on the plane of the display panel 100 overlap each other, and the electromagnetic fields of the first heating circuit 1 and the second heating circuit 2 are inverted.
Specifically, as shown in fig. 3 and 4, the display panel 100 includes the display panel 100, a first heating circuit 1, and a second heating circuit 2, wherein the first heating circuit 1 and the second heating circuit 2 are used to heat the display panel 100 in a low temperature environment. The first heating circuit 1 and the second heating circuit 2 are stacked on each other and insulated from each other in the light emitting direction of the display panel 100, that is, the first heating circuit 1 and the second heating circuit 2 are respectively provided in the light emitting direction of the display panel 100, and the first heating circuit 1 and the second heating circuit 2 are not communicated with each other.
The relative positions of the first heating circuit 1, the second heating circuit 2 and the display panel 100 are not limited in the embodiment of the invention, and the first heating circuit 1 and the second heating circuit 2 may be disposed inside the display panel 100 or may be disposed adjacent to the display panel 100. In addition, the vertical projections of the first heating circuit 1 and the second heating circuit 2 on the plane of the display panel 100 at least partially overlap with the display panel 100, that is, the front projection of the first heating circuit 1 on the light-emitting surface of the display panel 100 is at least partially located in the area covered by the display panel 100, and likewise, the front projection of the second heating circuit 2 on the light-emitting surface of the display panel 100 is at least partially located in the area covered by the display panel 100. This arrangement can ensure the heating effect of the first heating circuit 1 and the second heating circuit 2 on the display panel 100 under the low temperature condition. In fig. 3 and 4, the first heating circuit 1 and the second heating circuit 2 are disposed in the display panel 100, and the actual disposition is not limited thereto.
Further, as shown in fig. 4, the vertical projections of the first heating circuit 1 and the second heating circuit 2 on the plane of the display panel 100 overlap each other, that is, there is a region where the vertical projections of the first heating circuit 1 and the second heating circuit 2 on the plane of the display panel 100 overlap each other. And the electromagnetic fields of the first heating circuit 1 and the second heating circuit 2 are inverted, it is also understood that the first electromagnetic field 31 formed by the first heating circuit 1 during operation and the second electromagnetic field 32 formed by the second heating circuit 2 during operation are in opposite directions. In this arrangement, when the first heating circuit 1 and the second heating circuit 2 transmit the heating signal, the first electromagnetic field 31 generated by the first heating circuit 1 and the second electromagnetic field 32 generated by the second heating circuit 2 are in close proximity to each other, and the directions of the magnetic fields of the first electromagnetic field 31 and the second electromagnetic field 32 are opposite, so that the first electromagnetic field 31 and the second electromagnetic field 32 can cancel each other, and the interference of the electromagnetic field of the heating circuit on other electrical signals in the driving circuit layer 42 of the display panel 100 is avoided, thereby improving the working stability of the display panel 100.
In addition, when the display panel 100 is a liquid crystal display panel, as shown in fig. 4, the first electromagnetic field 31 and the second electromagnetic field 32 cancel each other, so that the influence of the electromagnetic field generated by the heating circuit on the deflection of the liquid crystal 0 in the prior art is eliminated, and the display effect of the display panel 100 is improved.
Here, the embodiment of the present invention is not limited as to how to set the electromagnetic fields of the first heating circuit 1 and the second heating circuit 2 to be opposite, that is, the first electromagnetic field 31 and the second electromagnetic field 32 to be opposite, and those skilled in the art can set the electromagnetic fields according to the actual situation.
Illustratively, in the embodiment of the present invention, the electromagnetic fields generated by the first heating circuit 1 and the second heating circuit 2 may be inverted by setting the driving signals, i.e., the heating signals, to be different from each other. Fig. 5 is a timing chart of a driving signal provided by an embodiment of the present invention, and fig. 6 is a timing chart of another driving signal provided by an embodiment of the present invention, as shown in fig. 5 and fig. 6, driving signals of the first heating circuit 1 and the second heating circuit 2 may be dc signals, and have the same amplitude and opposite polarities; alternatively, the driving signals of the first heating circuit 1 and the second heating circuit 2 are both ac signals and have opposite phases.
Specifically, referring to fig. 5, when the driving signals of the first heating circuit 1 and the second heating circuit 2 are both direct current signals, the first driving signal 11 of the first heating circuit 1 and the second driving signal 21 of the second heating circuit 2 may be set to have the same magnitude and opposite polarities. For example, when the first driving signal 11 is V1, the second driving signal 21 is-V1, thereby causing the first heating circuit 1 and the second heating circuit 2 to generate electromagnetic fields in opposite phases.
Alternatively, referring to fig. 6, when the driving signals of the first heating circuit 1 and the second heating circuit 2 are both alternating current signals, the phases of the first driving signal 11 of the first heating circuit 1 and the second driving signal 21 of the second heating circuit 2 may be set to be opposite. For example, the first drive signal 11 is a square wave pulse signal varying between V1 and 0, and the second drive signal 21 is a square wave pulse signal varying between-V1 and 0, thereby causing the first heating circuit 1 and the second heating circuit 2 to generate an inverted electromagnetic field.
Of course, the above two driving signals are only optional specific embodiments of electromagnetic field inversion of the first heating circuit 1 and the second heating circuit 2, and in the practical application process, a person skilled in the art may select other possible embodiments according to the practical needs, and any manner capable of implementing electromagnetic field inversion of the first heating circuit 1 and the second heating circuit 2 is within the scope of the technical solution protected by the embodiment of the present invention.
In the invention, the display panel comprises a display panel, a first heating circuit and a second heating circuit, wherein the first heating circuit and the second heating circuit are mutually laminated and mutually insulated in the light emitting direction of the display panel; the first heating circuit and the second heating circuit are positioned in the display panel or adjacent to the display panel, and the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel is at least partially overlapped with the display panel; the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel are overlapped, and the electromagnetic fields of the first heating circuit and the second heating circuit are opposite. Through the technical scheme, when the first heating circuit and the second heating circuit transmit heating signals, the first electromagnetic field generated by the first heating circuit and the second electromagnetic field generated by the second heating circuit are close to each other, the magnetic field directions of the first electromagnetic field and the second electromagnetic field are opposite, and then the first electromagnetic field and the second electromagnetic field can cancel each other, so that the interference of the first electromagnetic field and the second electromagnetic field on other signals in the display panel is avoided, and the working stability of the display panel is improved.
When the first heating circuit and the second heating circuit are disposed inside the display panel, a person skilled in the art can set the setting manner and the setting position of the first heating circuit and/or the second heating circuit according to actual requirements. The arrangement of the first heating circuit and the second heating circuit is described in several alternative embodiments below.
Fig. 7 to fig. 9 are schematic cross-sectional structures of three display panels according to an embodiment of the present invention, and referring to fig. 7 to fig. 9, in the present invention, the display panel 100 may include an array substrate 4, a display functional layer 5 and a color film substrate 6, where the array substrate 4, the display functional layer 5 and the color film substrate 6 are sequentially stacked in a light emitting direction of the display panel 100; the first heating circuit 1 and the second heating circuit 2 are both disposed in the array substrate 4 or the color film substrate 6, or the first heating circuit 1 and the second heating circuit 2 are disposed in the array substrate 4 and the color film substrate 6, respectively.
Specifically, the display panel 100 may include an array substrate 4, a display function layer 5, and a color film substrate 6, which are sequentially stacked in the light emitting direction. The array substrate 4 may include a first substrate 41 and a driving circuit layer 42 formed on a surface of the first substrate 41 near the display function layer 5, where the driving circuit layer 42 is used to drive the display function layer 5 to emit light or selectively emit light; the display functional layer 5 may be an organic light emitting functional layer or a liquid crystal layer, when the display functional layer 5 is an organic light emitting functional layer, the driving circuit layer 42 is used for driving the organic light emitting functional layer to emit light, when the display functional layer 5 is a liquid crystal layer, the driving circuit layer 42 generates a driving signal, and the driving signal generates a driving electric field to act on the liquid crystal layer so as to deflect liquid crystal molecules, thereby enabling the backlight to emit light; the color film substrate 6 may include a second substrate 61 and a color filter layer (not shown in the figure) disposed on the second substrate 61 and far from the display functional layer 5, where the light in the display functional layer 5 passes through the color filter layer to display images with different colors and gray scales.
For the specific arrangement modes of the array substrate 4, the display functional layer 5 and the color film substrate 6, the embodiment of the invention is not limited, and a person skilled in the art can adopt any arrangement mode in the prior art according to actual requirements, and will not be repeated here.
Alternatively, referring to fig. 7, in a possible embodiment, the first heating circuit 1 and the second heating circuit 2 may be both disposed in the array substrate 4, specifically, may be both disposed between the first substrate 41 and the driving circuit layer 42, and then the first insulating layer 43 may be disposed between the first heating circuit 1 and the second heating circuit 2. Since the array substrate 4 is provided with the step region (not shown in the drawing) for binding, the first heating circuit 1 and the second heating circuit 2 are provided in the array substrate 4 without additionally providing the step region, and the manufacturing process of the display panel 100 is reduced. Of course, the arrangement positions of the first heating circuit 1 and the second heating circuit 2 in the array substrate 4 are not limited thereto, and may be set by those skilled in the art according to actual requirements.
Alternatively, referring to fig. 8, in another possible embodiment, the first heating circuit 1 and the second heating circuit 2 may be both disposed in the color film substrate 6, specifically, one side surface of the color film substrate 6 near the display function layer 5 may be both disposed, and the second insulating layer 44 may be disposed between the first heating circuit 1 and the second heating circuit 2. In this arrangement, the first heating circuit 1 and the second heating circuit 2 are far from the driving circuit layer 42 in the array substrate 4, and the interference of the first electromagnetic field and the second electromagnetic field is weak.
Alternatively, referring to fig. 9, in still another possible embodiment, the first heating circuit 1 and the second heating circuit 2 may be disposed in the array substrate 4 and the color film substrate 6, respectively, that is, the first heating circuit 1 and the second heating circuit 2 are disposed at both sides of the display function layer 5, respectively. In fig. 9, the first heating circuit 1 is exemplarily disposed in the array substrate 4, and the second heating circuit 2 is disposed in the color film substrate 6, but the actual disposition is not limited thereto. The advantage of this arrangement is that no additional insulating layer is required between the first heating circuit 1 and the second heating circuit 2, which reduces the manufacturing process and reduces the overall thickness of the display panel.
Alternatively, fig. 10 is a schematic structural diagram of another display panel provided in the embodiment of the present invention, fig. 11 is a schematic structural diagram of a cross section of fig. 10 along the direction of C-C', and referring to fig. 10 and 11, in this embodiment, the array substrate 4 may include a data signal line circuit 7, and the data signal line circuit 7 is multiplexed into the second heating circuit 2.
Specifically, as shown in fig. 10 and 11, the array substrate 4 further includes a data signal line circuit 7 therein, the data signal line circuit 7 may be disposed in the driving circuit layer 42, and the data signal line circuit 7 may be used to transmit a data signal to the display function layer 5 in a data signal stage. It should be noted that, in the present invention, the data signal line circuit 7 may be multiplexed into the second heating circuit 2. The multiplexing data signal line circuit 7 is the second heating circuit 2, and the second heating circuit 2 is not required to be additionally arranged, so that the manufacturing cost and the manufacturing flow of the display panel 100 are reduced.
When the data signal line circuit 7 is multiplexed to the second heating circuit 2, the data signal line circuit 7 and the first heating circuit 1 are overlapped with each other in the vertical projection of the plane of the display panel 100, so that the electromagnetic fields generated by the two circuits cancel each other. In fig. 10 and 11, the first heating circuit 1 is exemplarily disposed in the array substrate 4, and the actual disposition is not limited thereto, but may be disposed in the color film substrate 6.
In addition, when a color resistor (not shown) and a black matrix (not shown) disposed around the color resistor are disposed in the color film substrate 6, the vertical projections of the first heating circuit 1 and the data signal line circuit 7 on the plane of the display panel 100 may be disposed so as to overlap with the vertical projections of the black matrix on the plane of the display panel 100. It can be understood that the black matrix is generally disposed in the non-light-transmitting area of the display panel 100, and the first heating circuit 1 and the data signal line circuit 7 do not affect the light-emitting effect of the display panel 100 by adopting the above arrangement, so as to ensure the display effect of the display panel 100. The above color resists and black matrix color arrangements may refer to any prior art and are not described herein.
Optionally, fig. 12 is a timing chart of still another driving signal provided by the embodiment of the present invention, as shown in fig. 12, when the data signal line circuit 7 is multiplexed into the second heating circuit 2, the data signal line circuit 7 includes a data signal phase T1 and a heating signal phase T2, and the data signal phase T1 and the heating signal phase T2 do not overlap on the time axis; in the heating signal phase T2, the data signal line circuit 7 is inverted from the electromagnetic field of the first heating circuit 1.
Specifically, referring to fig. 12, in driving the display panel 100 to emit light, the data signal line circuit 7 needs to supply the data signal 22 to the display function layer 5. In the present embodiment, when the data signal line circuit 7 is multiplexed as the second heating circuit 2, the data signal line circuit 7 is set to include the data signal stage T1 and the heating signal stage T2. Further, the data signal phase T1 and the heating signal phase T2 do not overlap on the time axis, that is, in the data signal phase T1, the driving chip transmits the data signal 22 through the data signal line circuit 7; in the heating signal stage T2, the driving chip transmits the second driving signal 21 through the data signal line circuit 7 to heat the display panel 100. Thereby, it can be ensured that the transmission of the second drive signal 21 does not interfere with the transmission of the data signal 22.
It will be appreciated that in the heating signal phase T2, the driving chip transmits the second driving signal 21 to the data signal line circuit 7 and simultaneously transmits the first driving signal 11 to the first heating circuit 1. At this time, the electromagnetic fields of the data signal line circuit 7 and the first heating circuit 1 are inverted to realize that the electromagnetic fields generated by the data signal line circuit 7 and the first heating circuit 1 cancel each other, thereby eliminating the interference of the electromagnetic field generated by the first heating circuit 1.
The electromagnetic field inversion of the data signal line circuit 7 and the first heating circuit 1 can be realized by referring to the technical scheme in the above embodiment, which is not repeated here. For example, as shown in fig. 12, in the heating signal phase T2, the first heating circuit 1 may be made opposite in phase to the driving signal transmitted by the data signal line circuit 7, so that the data signal line circuit 7 and the first heating circuit 1 generate an opposite electromagnetic field.
Alternatively, fig. 13 is an enlarged schematic view of fig. 10 at D, referring to fig. 10, 11 and 13, in a possible embodiment, the array substrate 4 may include a display area AA and a frame area NA, where the binding pads 8 are disposed; the data signal line circuit 7 comprises a plurality of data signal lines 71 which extend along a first direction X and are sequentially arranged along a second direction Y, first ends 72 of the plurality of data signal lines 71 in the first direction X are electrically connected with the binding pads 8, second ends 73 of the plurality of data signal lines 71 in the first direction X are connected by the switching tubes 9 in pairs, and the binding pads 8 and the switching tubes 9 are positioned in a frame area NA on two opposite sides of the display area AA in the first direction X; the first direction X and the second direction are perpendicular to each other, and the first end 72 and the second end 73 are two ends facing away from each other in the first direction X.
Referring to fig. 10, 11 and 13, the array substrate 4 may include a display area AA and a frame area NA where a bonding pad 8 is disposed, the bonding pad 8 being used to achieve connection between the first heating circuit 1, the data signal line circuit 7 and a driving chip (not shown in the drawings).
Accordingly, in order to multiplex the data signal line circuit 7 to heat the display panel 100, in the present embodiment, the data signal line circuit 7 may be provided to include a plurality of data signal lines 71 extending in the first direction X and sequentially arranged in the second direction Y, for example, a first data signal line 74, a second data signal line 75, a third data signal line 76, and a fourth data signal line 77 shown in fig. 13. First ends 72 of the plurality of data signal lines 71 in the first direction X are electrically connected to the bonding pads 8 to be connected to a driving chip (not shown in the drawing); the second ends 73 of the plurality of data signal lines 71 in the first direction X are connected by the switching tube 9 two by two to achieve shorting between the data signal lines 71, the control end of the switching tube 9 is connected with the switch control signal SW, and the switching tube 9 is turned on or off according to the switch control signal SW. The number of data signal lines 71 shown in fig. 13 is merely an example, and the actual arrangement is not limited thereto.
Specifically, taking fig. 10 to 13 as an example, in the data signal stage T1, the first switching tube 91 and the second switching tube 92 may be controlled to be turned off, and the driving chip (not shown in the figure) transmits the data signal 22 to each sub-pixel (not shown in the figure) in the display area AA through the first data signal line 74, the second data signal line 75, the third data signal line 76 and the fourth data signal line 77, respectively; in the heating signal stage T2, the first switching tube 91 and the second switching tube 92 may be controlled to be turned on, and at this time, the first data signal line 74 and the fourth data signal line 77, the second data signal line 75 and the third data signal line 76 are connected, and the driving chip provides heating signals to the first ends 72 of the data signal lines 71 to form a plurality of heating circuits for heating the display panel 100.
Fig. 13 exemplarily illustrates that the first data signal line 74 and the fourth data signal line 77 are connected through the first switching tube 91, the second data signal line 75 and the third data signal line 76 are connected through the second switching tube 92, the second switching tube 91 and the first switching tube 92 are sequentially arranged in the first direction X, the actual arrangement is not limited thereto, and one skilled in the art can adjust according to the actual wiring manner of the data signal line 71 in the display panel 100.
Further, the bonding pad 8 and the switching tube 9 are located in the frame area NA on opposite sides of the display area AA in the first direction X, that is, the first end 72 and the second end 73 of the data signal line 71 are located in the frame area NA on opposite sides of the display area AA in the first direction X, and the first direction X and the second direction Y are perpendicular to each other, and the first end 72 and the second end 73 are opposite ends of the first direction X. The advantage of this arrangement is that the data signal line circuit 7 can cover more area of the display panel 100, thereby improving the heating effect of the display panel 100.
Alternatively, fig. 14 is a schematic structural diagram of still another display panel according to an embodiment of the present invention, and fig. 15 is an enlarged structural diagram of fig. 14 at E, referring to fig. 14 and fig. 15, in another possible embodiment, two adjacent data signal lines 71 are connected through a switch tube 9 in a plurality of data signal lines 71.
Specifically, as shown in fig. 14 and 15, among the plurality of data signal lines 71 extending in the first direction X and arranged in the second direction Y, each adjacent two of the data signal lines 71 are connected through one switching tube 9, and when each switching tube 9 is turned on, the adjacent two data signal lines 71 form a heating loop. In this arrangement, the data signal line circuit 7 can be directly designed into a wiring loop under the adjacent black matrix, the data signal line circuit 7 is densely arranged, the distance between the data signal lines 71 arranged in the second direction Y in the data signal line circuit 7 is very short, and the electromagnetic field radiation vectors generated by the opposite currents passing between the two adjacent data signal lines 71 are inverted, so that the electromagnetic field interference of the heating circuit is further reduced, and the normal operation of the display panel 100 is ensured.
It should be understood that, in the above embodiments, the specific arrangement of the data signal line circuit 7 is described, the first heating circuit 1 may be designed according to the wiring manner of the data signal line circuit 7, and when the wiring manner of the data signal line circuit 7 is changed, the arrangement manner of the first heating circuit 1 needs to be adjusted accordingly.
Alternatively, referring still to fig. 15, in the embodiment of the present invention, the switching tubes 9 may be disposed in the frame area NA sequentially along the second direction Y. As shown in fig. 15, in the second direction Y, the switching tubes 9 connecting the two data signal lines may also be disposed to be sequentially arranged in the frame area NA, that is, each switching tube 9 is aligned in the second direction Y, whereby the area occupied by the switching tube 9 in the frame area NA may be reduced, and the influence of the switching tube 9 in the frame area NA of the display panel 100 may be reduced.
Optionally, in the foregoing embodiments, the first heating circuit 1 and the second heating circuit 2 are both described in a form of a wire, and the actual setting situation is not limited thereto, and in the actual application process, the first heating circuit 1 and the second heating circuit 2 each include a plurality of wires or a plurality of electrode blocks, or the first heating circuit 1 and the second heating circuit 2 each have a metal grid shape.
Fig. 16 is a schematic structural view of another display panel according to an embodiment of the present invention, and fig. 17 is a schematic structural view of another display panel according to an embodiment of the present invention. The first heating circuit 1 and the second heating circuit 2 shown in fig. 16 include a plurality of electrode blocks; the first heating circuit 1 and the second heating circuit 2 shown in fig. 17 are each in a metal mesh shape.
Of course, the structures of the first heating circuit 1 and the second heating circuit 2 are not limited to those shown in the above-described drawings, and those skilled in the art can adjust the structures of the first heating circuit 1 and the second heating circuit 2 according to actual setting requirements.
Based on the same inventive concept, the embodiment of the invention also provides a display device. The display device includes the display panel 100 provided by any embodiment of the present invention, so the display device provided by the embodiment of the present invention has the corresponding beneficial effects of the display panel 100 provided by the embodiment of the present invention, and will not be described herein. The display device may be, for example, an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and a vehicle-mounted display device, which is not limited in the embodiment of the present invention.
Fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 18, the display device includes the display panel 100 in the above-described embodiment.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A display panel, characterized by comprising a display panel, a first heating circuit and a second heating circuit, wherein the first heating circuit and the second heating circuit are mutually laminated and mutually insulated in the light emitting direction of the display panel;
the first heating circuit and the second heating circuit are positioned in the display panel or adjacent to the display panel, and the vertical projection of the first heating circuit and the second heating circuit on the plane of the display panel is at least partially overlapped with the display panel;
the vertical projection of the first heating circuit and the second heating circuit on the plane where the display panel is located are overlapped with each other, and the electromagnetic fields of the first heating circuit and the second heating circuit are opposite in phase.
2. The display panel according to claim 1, wherein the display panel includes an array substrate, a display functional layer, and a color film substrate, the array substrate, the display functional layer, and the color film substrate being sequentially laminated in a light emitting direction of the display panel;
the first heating circuit and the second heating circuit are both arranged in the array substrate or the color film substrate, or the first heating circuit and the second heating circuit are respectively arranged in the array substrate and the color film substrate.
3. The display panel according to claim 2, wherein the array substrate includes a data signal line circuit multiplexed as the second heating circuit.
4. A display panel according to claim 3, wherein the data signal line circuit includes a data signal stage and a heating signal stage, the data signal stage and the heating signal stage not overlapping on a time axis;
in the heating signal stage, the data signal line circuit is in phase opposition to the electromagnetic field of the first heating circuit.
5. The display panel of claim 3, wherein the array substrate comprises a display region and a bezel region, the bezel region being provided with binding pads;
the data signal line circuit comprises a plurality of data signal lines which extend along a first direction and are sequentially arranged along a second direction, first ends of the plurality of data signal lines in the first direction are electrically connected with the binding pads, second ends of the plurality of data signal lines in the first direction are connected in pairs through switching tubes, and the binding pads and the switching tubes are positioned in frame areas on two opposite sides of the display area in the first direction;
the first end and the second end are two ends which are opposite to each other in the first direction.
6. The display panel according to claim 5, wherein each adjacent two of the plurality of data signal lines are connected through one of the switching tubes.
7. The display panel according to claim 5 or 6, wherein the switching tubes are sequentially arranged along the second direction in the frame region.
8. The display panel according to claim 1, wherein the driving signals of the first heating circuit and the second heating circuit are both direct current signals and have the same amplitude and opposite polarities; or the driving signals of the first heating circuit and the second heating circuit are alternating current signals and have opposite phases.
9. The display panel according to claim 1, wherein the first heating circuit and the second heating circuit each include a plurality of wirings or a plurality of electrode blocks, or the first heating circuit and the second heating circuit each have a metal mesh shape.
10. A display device comprising a display panel according to any one of claims 1-9.
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